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Re: [PATCH v3] PM / sleep: prohibit devices probing during suspend/hibernation

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  Re: [PATCH v3] PM / sleep: prohibit devices probing during suspend/hibernation "Rafael J. Wysocki" <rjw@rjwysocki.net> - 2015-12-02 02:50 +0100

#1281400 — Re: [PATCH v3] PM / sleep: prohibit devices probing during suspend/hibernation

On Tuesday, November 10, 2015 11:42:34 AM Grygorii Strashko wrote:
> It is unsafe [1] if probing of devices will happen during suspend or
> hibernation and system behavior will be unpredictable in this case.
> So, let's prohibit device's probing in dpm_prepare() and defer their
> probing instead. The normal behavior will be restored in
> dpm_complete().
> 
> This patch introduces new DD core APIs:
>  device_block_probing()
>    It will disable probing of devices and defer their probes instead.
>  device_unblock_probing()
>    It will restore normal behavior and trigger re-probing of deferred
>    devices.
> 
> [1] https://lkml.org/lkml/2015/9/11/554
> Cc: Alan Stern <stern@rowland.harvard.edu>
> Cc: Rafael J. Wysocki <rjw@rjwysocki.net>
> Cc: Thierry Reding <thierry.reding@gmail.com>
> Signed-off-by: Grygorii Strashko <grygorii.strashko@ti.com>

Patch queued up for v4.5, thanks!

Rafael

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